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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
One of the things he recommends are git katas, which are short exercises that teach you about some aspect of git. You don't need the book in order to do the katas, but the book certainly helps by explaining more in depth what's going on.
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